Quarterly report [Sections 13 or 15(d)]

Note 2 - Net Income (Loss) Per Share (Details Textual)

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Note 2 - Net Income (Loss) Per Share (Details Textual) - shares
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Share-Based Payment Arrangement, Option [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 118,350 379,471 178,632 395,619
Performance Shares [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 69,117 76,121 69,117 76,121